Warped rotors "normal"?

Lee123 · 06-06-2010, 03:53 PM

Did Nissan just get a batch of bad rotors or what? Rotors shouldn't warp like that. Any idea why these are warping?

Both front rotors warped within a couple thousand miles on a Suzuki 1100 I had a few years back and the service manager said they had a batch of rotors that were improperly heat treated. He said if the second set did it they would turn them and then they'd never do it again, but the second set were OK.

Zeto · 06-28-2010, 09:18 PM

Oh I see! You're the man Steve

Push370zzz · 10-16-2010, 12:01 AM

So a while ago I bought a set of Stoptech slotted front rotors for the sport package. I did two track days on them and they were fantastic. Today, I was at the track and while bedding in a set of new pads (before I even had a chance to go out on the track!!) it starts shuddering like a ************. I thought I warped them and swapped them back to the stock ones...which I thankfully had with me. I loved these rotors and the price was great, but should I seek a replacement set or is this common? If this is something common I'm never going to buy them again considering they warped so easily, maybe I had a bad set. So anyways just looking for you guys' experiences and advice.

Modshack · 10-16-2010, 09:33 AM

Quote:

Originally Posted by smashwebs

So a while ago I bought a set of Stoptech slotted front rotors for the sport package. I did two track days on them and they were fantastic. Today, I was at the track and while bedding in a set of new pads (before I even had a chance to go out on the track!!) it starts shuddering like a ************. I thought I warped them and swapped them back to the stock ones...which I thankfully had with me. I loved these rotors and the price was great, but should I seek a replacement set or is this common? If this is something common I'm never going to buy them again considering they warped so easily, maybe I had a bad set. So anyways just looking for you guys' experiences and advice.

Sounds like Pad transfer, not warping. Stoptech has a tech paper on this here:
StopTech : Balanced Brake Upgrades

Push370zzz · 10-17-2010, 11:55 AM

Quote:

Originally Posted by Modshack

Sounds like Pad transfer, not warping. Stoptech has a tech paper on this here:
StopTech : Balanced Brake Upgrades

I actually read this before posting, and am fairly certain that is not the problem. The front wheels would not spin freely at all when the car was jacked up, and when accelerating quickly the front end would start to vibrate violently, as I would expect if the rotors were imbalanced...

AP - Chris_B · 10-18-2010, 11:26 AM

Quote:

Originally Posted by smashwebs

So a while ago I bought a set of Stoptech slotted front rotors for the sport package. I did two track days on them and they were fantastic. Today, I was at the track and while bedding in a set of new pads (before I even had a chance to go out on the track!!) it starts shuddering like a ************. I thought I warped them and swapped them back to the stock ones...which I thankfully had with me. I loved these rotors and the price was great, but should I seek a replacement set or is this common? If this is something common I'm never going to buy them again considering they warped so easily, maybe I had a bad set. So anyways just looking for you guys' experiences and advice.

Were you bedding the same pad compound or a different one? If different, did you remove the old pad transfer layer first, or just try to bed the new pads over the old pad layer?

Chris

daisuke149 · 10-16-2010, 10:02 AM

guys wearable parts are under warranty for 12k miles. cept tires normally.

because rotors, clutch's etc shouldnt wear out unless you been tracking it and if they knew that they won't warranty it..

so never hurts to take it in and ask (if your on good terms with the dealer and have a good dealer)

ClemsonWill · 10-18-2010, 01:57 PM

[QUOTE=daisuke149;768189]guys wearable parts are under warranty for 12k miles. cept tires normally. QUOTE]

I didn't know this. Is this accurate with all manufacturers?

worldfamousz · 10-18-2010, 02:03 PM

Infiniti has had a history of using fairly weak rotors that tend to warp fairly easily.
Any dealership should be able to at least turn the rotors for you under warranty. If you go to a dealer and they give you grief over it, I would HIGHLY recommend talking to their service manager and complain about it. Infiniti dealers are VERY subject to CSI ratings and usually the service manager will do anything in his power to remedy the situation so that you give them a good score on the survey.

Push370zzz · 10-18-2010, 04:37 PM

No offense, but did you guys even read my post? These are Stoptech rotors, not stock rotors. I bed in the track pads on these, did a track day. Switched out pads for stockers for the street, switch out stock pads for track pads, etc...

It happened while I was trying to bed in a new set of pads.

10-16-2010, 12:01 AM	#3 (permalink)
Push370zzz Track Member Join Date: Jul 2009 Location: NE Age: 40 Posts: 649 Drives: cars Rep Power: 18	So a while ago I bought a set of Stoptech slotted front rotors for the sport package. I did two track days on them and they were fantastic. Today, I was at the track and while bedding in a set of new pads (before I even had a chance to go out on the track!!) it starts shuddering like a ************. I thought I warped them and swapped them back to the stock ones...which I thankfully had with me. I loved these rotors and the price was great, but should I seek a replacement set or is this common? If this is something common I'm never going to buy them again considering they warped so easily, maybe I had a bad set. So anyways just looking for you guys' experiences and advice. __________________ Range Rover Sport Supercharged Nissan 370z Touring + Sport

10-18-2010, 01:57 PM	#8 (permalink)
ClemsonWill A True Z Fanatic Join Date: Jul 2010 Location: Charleston, SC Posts: 12,045 Drives: a Civic VP! Rep Power: 446	[QUOTE=daisuke149;768189]guys wearable parts are under warranty for 12k miles. cept tires normally. QUOTE] I didn't know this. Is this accurate with all manufacturers? __________________ Slightly modded

10-18-2010, 04:37 PM	#10 (permalink)
Push370zzz Track Member Join Date: Jul 2009 Location: NE Age: 40 Posts: 649 Drives: cars Rep Power: 18	No offense, but did you guys even read my post? These are Stoptech rotors, not stock rotors. I bed in the track pads on these, did a track day. Switched out pads for stockers for the street, switch out stock pads for track pads, etc... It happened while I was trying to bed in a new set of pads. __________________ Range Rover Sport Supercharged Nissan 370z Touring + Sport

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FS: Alliance BBK 8/6 piston 15" rotors	SOLISIMO	Parts for sale (Private Classifieds)	33	03-18-2010 09:51 PM
"Warning" Carbon Fiber Z emblems "DO NOT FIT"	NXTAZEE	Exterior & Interior	2	12-20-2009 03:49 AM
Pretty sure I warped my rotors	Solus	Brakes & Suspension	15	09-19-2009 12:18 AM
Break in - drive it "hard" or "be gentle"?	kannibul	Engine & Drivetrain	3	06-06-2009 01:51 AM

06-06-2010, 03:53 PM	#1 (permalink)
Lee123 Base Member Join Date: Apr 2010 Location: Phoenix Posts: 84 Drives: 2010 370Z Roadster Rep Power: 16	Did Nissan just get a batch of bad rotors or what? Rotors shouldn't warp like that. Any idea why these are warping? Both front rotors warped within a couple thousand miles on a Suzuki 1100 I had a few years back and the service manager said they had a batch of rotors that were improperly heat treated. He said if the second set did it they would turn them and then they'd never do it again, but the second set were OK.

06-28-2010, 09:18 PM	#2 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 41 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 268	Oh I see! You're the man Steve

10-16-2010, 10:02 AM	#7 (permalink)
daisuke149 My *** is famous! Join Date: Mar 2010 Location: Alpharetta, GA Posts: 4,849 Drives: 2013 Boss 302 PW Rep Power: 32	guys wearable parts are under warranty for 12k miles. cept tires normally. because rotors, clutch's etc shouldnt wear out unless you been tracking it and if they knew that they won't warranty it.. so never hurts to take it in and ask (if your on good terms with the dealer and have a good dealer)

10-18-2010, 02:03 PM	#9 (permalink)
worldfamousz Base Member Join Date: Oct 2010 Location: so cal Posts: 52 Drives: mazdaspeed3 Rep Power: 15	Infiniti has had a history of using fairly weak rotors that tend to warp fairly easily. Any dealership should be able to at least turn the rotors for you under warranty. If you go to a dealer and they give you grief over it, I would HIGHLY recommend talking to their service manager and complain about it. Infiniti dealers are VERY subject to CSI ratings and usually the service manager will do anything in his power to remedy the situation so that you give them a good score on the survey.